techniq

import dateFns from 'date-fns';

function getMonthDays(date) {
  const startOfMonth = dateFns.startOfMonth(date);
  const endOfMonth = dateFns.endOfMonth(date);

  let prevMonthDaysNeeded = startOfMonth.getDay();
  const prevMonthDays = prevMonthDaysNeeded ? dateFns.eachDay(
    dateFns.subDays(startOfMonth, prevMonthDaysNeeded),
    dateFns.subDays(startOfMonth, 1)

bryik

license: mit

luthfianto

function dda(x0, y0, x1, y1)
{
    const dx = x1 - x0,
          dy = y1 - y0,
          s  = Math.abs(dx) > Math.abs(dy) ? Math.abs(dx) : Math.abs(dy),
          xi = dx * 1.0 / s,
          yi = dy * 1.0 / s
 
    var x  = x0,
        y  = y0,